Why is resting in Christ's righteousness important for Christians?

Resting in Christ's righteousness is crucial for Christians because it reflects a proper understanding of grace and eliminates the need for self-sustaining efforts. When we approach God, we do so not based on our merits or emotional expressions but solely upon the finished work of Christ. Romans 3:26 declares that God is just and the justifier, which reassures us that our acceptance is not contingent on our own sincerity or feelings but on faith in Jesus' sacrifice. This understanding grants us peace and confidence in our relationship with God. Moreover, it prevents the believer from the burden of performance-based righteousness, allowing us to enjoy a full and restful assurance of salvation through faith alone, which is a gift of grace.